| Grand Bec | |
| Elevation M: | 3398 |
| Range: | Vanoise Massif |
| Location: | Savoie, France |
| Map: | France |
| Label Position: | left |
| Coordinates: | 45.4236°N 6.7528°W |
Grand Bec is a mountain of Savoie, France. It lies in the Massif de la Vanoise range. It has an elevation of 3,398 metres above sea level.